# CVE-2023-23597: Logic bug in process allocation allowed to read arbitrary files

CVE-2023-23597 is fixed in 5 products on 2 platforms, first by Mozilla Firefox (en-US) 109.0, released January 17, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-23597
- Priority: Routine
- CVSS: 6.5 (Medium)
- EPSS: 0.0034
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 17, 2023
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-23597

## Description

A compromised web child process could disable web security opening restrictions, leading to a new child process being spawned within the `file://` context. Given a reliable exploit primitive, this new process could be exploited again leading to arbitrary file read. This vulnerability affects Firefox < 109.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Firefox (en-US) | 109.0 | [Mozilla Firefox (en-US) 109.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-109.0.md) | Jan 17, 2023 |
| Windows apps | Mozilla Firefox ESR (en-US) | 115.4.0 | [Mozilla Firefox ESR (en-US) 115.4.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-115.4.0.md) | Oct 17, 2023 |
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 109.0+build2-0ubuntu0.18.04.1 | [firefox 109.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-109.0-build2-0ubuntu0.18.04.1.md) | Jan 17, 2023 |
| Linux | firefox Ubuntu 20.04 LTS (focal) | 109.0+build2-0ubuntu0.20.04.1 | [firefox 109.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-109.0-build2-0ubuntu0.20.04.1.md) | Jan 17, 2023 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 109.0+build2-0ubuntu0.18.04.1 | [firefox-geckodriver 109.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-109.0-build2-0ubuntu0.18.04.1.md) | Jan 17, 2023 |
| Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 109.0+build2-0ubuntu0.20.04.1 | [firefox-geckodriver 109.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-109.0-build2-0ubuntu0.20.04.1.md) | Jan 17, 2023 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 109.0+build2-0ubuntu0.18.04.1 | [firefox-mozsymbols 109.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-109.0-build2-0ubuntu0.18.04.1.md) | Jan 17, 2023 |
| Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 109.0+build2-0ubuntu0.20.04.1 | [firefox-mozsymbols 109.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-109.0-build2-0ubuntu0.20.04.1.md) | Jan 17, 2023 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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